Concept information
Preferred term
primary cosmic ray
Definition(s)
- The cosmic rays which arrive on the Earth's atmosphere from the outer space. The primary cosmic rays are very high energy protons and to a lesser extent heavier nuclei which rain upon the Earth from all diretions in the outer space. They contain about 90% protons, 7% alpha particles and about 1% still heavier nuclei of amost all the atoms from Li to Ni (mass number< 60). (An Etymological Dictionary of Astronomy and Astrophysics, by M. Heydari-Malayeri, https://dictionary.obspm.fr/index.php?formSearchTextfield=primary+cosmic+rays&formSubmit=Search&showAll=1)
Broader concept(s)
Narrower concept(s)
Synonym(s)
- primary cosmic radiation
In other languages
URI
http://data.loterre.fr/ark:/67375/MDL-LKWPSQWP-J
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